GETTIMEOFDAY(3B)                                 GETTIMEOFDAY(3B)



     NAME
          gettimeofday - get date and time

     SYNOPSIS
          #include <sys/time.h>

          gettimeofday(tp, tzp)
          struct timeval *tp;
          struct timezone *tzp;

     DESCRIPTION
          The system's notion of the current Greenwich time and the
          current time zone is obtained with the gettimeofday call.
          The time is expressed in seconds and microseconds since
          midnight (0 hour), January 1, 1970.  The resolution of the
          system clock is hardware dependent, and the time may be
          updated continuously or in ``ticks.''  If tzp is zero, the
          time zone information will not be returned or set.

          The structures pointed to by tp and tzp are defined in
          <sys/time.h> as:

               struct timeval {
                    long tv_sec;        /* seconds since Jan. 1, 1970 */
                    long tv_usec;       /* and microseconds */
               };

               struct timezone {
                    int  tz_minuteswest;     /* of Greenwich */
                    int  tz_dsttime;    /* type of dst correction to apply */
               };

          The timezone structure indicates the local time zone
          (measured in minutes of time westward from Greenwich), and a
          flag that, if nonzero, indicates that Daylight Saving time
          applies locally during the appropriate part of the year.

          Only the super-user may set the time of day or time zone.

     RETURN
          A 0 return value indicates that the call succeeded.  A -1
          return value indicates an error occurred, and in this case
          an error code is stored into the global variable errno.

     ERRORS
          The following error codes may be set in errno:

          [EFAULT]       An argument address referenced invalid
                         memory.

     SEE ALSO
          date(1), ctime(3)



     Page 1                                        (last mod. 8/20/87)

     GETTIMEOFDAY(3B)                                 GETTIMEOFDAY(3B)



     ORIGIN
          4.3 BSD





















































     Page 2                                        (last mod. 8/20/87)